awl::main::exit_code const
example_main(
awl::main::function_context const &
)
try
{
sge::systems::instance<
brigand::list<
sge::systems::with_window,
sge::systems::with_renderer<
sge::systems::renderer_caps::core
>,
sge::systems::with_input
>
> const sys(
sge::systems::make_list
(
sge::systems::window(
sge::systems::window_source(
sge::systems::original_window(
sge::window::title(
FCPPT_TEXT("sge cg simple test")
)
)
)
)
)
(
sge::systems::renderer(
sge::renderer::pixel_format::object(
sge::renderer::pixel_format::color::depth32,
sge::renderer::pixel_format::depth_stencil::off,
sge::renderer::pixel_format::optional_multi_samples(),
sge::renderer::pixel_format::srgb::no
),
sge::renderer::display_mode::parameters(
sge::renderer::display_mode::vsync::on,
sge::renderer::display_mode::optional_object()
),
sge::viewport::optional_resize_callback{
sge::viewport::fill_on_resize()
}
)
)
(
sge::systems::input(
sge::systems::cursor_option_field::null()
)
)
);
sge::cg::context::object const cg_context{};
sge::cg::profile::object const vertex_profile(
sys.renderer_device_core().create_cg_profile(
sge::cg::profile::shader_type::vertex
)
);
sge::cg::string const vertex_shader_source(
"// This is C2E1v_green from \"The Cg Tutorial\" (Addison-Wesley, ISBN\n"
"// 0321194969) by Randima Fernando and Mark J. Kilgard. See page 38.\n"
"\n"
"struct C2E1v_Output {\n"
" float4 position : POSITION;\n"
"};\n"
"\n"
"C2E1v_Output C2E1v_green(float2 position : POSITION)\n"
"{\n"
" C2E1v_Output OUT;\n"
"\n"
" OUT.position = float4(position,0,1);\n"
"\n"
" return OUT;\n"
"}\n"
);
sge::cg::program::object vertex_program(
sge::cg::program::from_string_parameters(
cg_context,
sge::cg::program::source_type::text,
vertex_profile,
sge::cg::program::source(
vertex_shader_source
),
sge::cg::program::main_function(
"C2E1v_green"
),
sys.renderer_device_core().cg_compile_options(
cg_context,
vertex_profile
)
)
);
sge::renderer::cg::loaded_program_unique_ptr const loaded_vertex_program(
sys.renderer_device_core().load_cg_program(
vertex_program
)
);
sge::cg::profile::object const pixel_profile(
sys.renderer_device_core().create_cg_profile(
sge::cg::profile::shader_type::pixel
)
);
sge::cg::string const pixel_shader_source(
"struct C3E3f_Output {\n"
" float4 color : COLOR;\n"
"};\n"
"C3E3f_Output\n"
"C3E3f_simple()\n"
"{\n"
" C3E3f_Output OUT;\n"
"\n"
" OUT.color = float4(0,1,0,1);\n"
" return OUT;\n"
"}\n"
);
sge::cg::program::object pixel_program(
sge::cg::program::from_string_parameters(
cg_context,
sge::cg::program::source_type::text,
pixel_profile,
sge::cg::program::source(
pixel_shader_source
),
sge::cg::program::main_function(
"C3E3f_simple"
),
sys.renderer_device_core().cg_compile_options(
cg_context,
pixel_profile
)
)
);
sge::renderer::cg::loaded_program_unique_ptr const loaded_pixel_program(
sys.renderer_device_core().load_cg_program(
pixel_program
)
);
typedef
sge::renderer::vf::pos<
float,
3
>
pos3_type;
typedef
sge::renderer::vf::part<
brigand::list<
pos3_type
>
>
format_part;
typedef
sge::renderer::vf::format<
brigand::list<
format_part
>
>
format;
sge::renderer::vertex::declaration_unique_ptr const vertex_declaration(
sys.renderer_device_core().create_vertex_declaration(
sge::renderer::vertex::declaration_parameters(
sge::renderer::vf::dynamic::make_format<
format
>()
)
)
);
sge::renderer::vertex::buffer_unique_ptr const vertex_buffer(
sys.renderer_device_core().create_vertex_buffer(
sge::renderer::vertex::buffer_parameters(
*vertex_declaration,
sge::renderer::vf::dynamic::make_part_index<
format,
format_part
>(),
sge::renderer::vertex::count(
3u
),
sge::renderer::resource_flags_field::null()
)
)
);
{
sge::renderer::vertex::scoped_lock const vblock(
*vertex_buffer,
sge::renderer::lock_mode::writeonly
);
typedef
sge::renderer::vf::view<
format_part
>
vertex_view;
vertex_view const vertices(
vblock.value()
);
vertex_view::iterator vb_it(
vertices.begin()
);
typedef
pos3_type::packed_type
vec3;
(*vb_it).set<
pos3_type
>(
vec3(
-1.f,
1.f,
0.f
)
);
++vb_it;
(*vb_it).set<
pos3_type
>(
vec3(
-1.f,
-1.f,
0.f
)
);
++vb_it;
(*vb_it).set<
pos3_type
>(
vec3(
1.f,
1.f,
0.f
)
);
}
auto const draw(
[
&loaded_pixel_program,
&loaded_vertex_program,
&sys,
&vertex_buffer,
&vertex_declaration
]{
sge::renderer::context::scoped_core const scoped_block(
sys.renderer_device_core(),
sys.renderer_device_core().onscreen_target()
);
scoped_block.get().clear(
sge::renderer::clear::parameters()
.back_buffer(
sge::image::color::any::object{
sge::image::color::predef::black()
}
)
);
sge::renderer::vertex::scoped_declaration_and_buffers const vb_context(
scoped_block.get(),
*vertex_declaration,
sge::renderer::vertex::const_buffer_ref_container{
fcppt::make_cref(
*vertex_buffer
)
}
);
sge::renderer::cg::scoped_program const scoped_vertex_program(
scoped_block.get(),
*loaded_vertex_program
);
sge::renderer::cg::scoped_program const scoped_pixel_program(
scoped_block.get(),
*loaded_pixel_program
);
scoped_block.get().render_nonindexed(
sge::renderer::vertex::first(
0u
),
sge::renderer::vertex::count(
3u
),
sge::renderer::primitive_type::triangle_list
);
}
);
return
sge::window::loop(
sys.window_system(),
sge::window::loop_function{
[
&sys,
&draw
](
awl::event::base const &_event
)
{
sge::systems::quit_on_escape(
sys,
_event
);
fcppt::optional::maybe_void(
fcppt::cast::dynamic<
sge::renderer::event::render const
>(
_event
),
[
&draw
](
fcppt::reference<
sge::renderer::event::render const
>
)
{
draw();
}
);
}
}
);
}
catch(
fcppt::exception const &_error
)
{
awl::show_error(
_error.string()
);
return
awl::main::exit_failure();
}
catch(
std::exception const &_error
)
{
awl::show_error_narrow(
_error.what()
);
return
awl::main::exit_failure();
}
/**
* Shader linker. Currently:
*
* 1. The last attached vertex shader and fragment shader are linked.
* 2. Varying vars in the two shaders are combined so their locations
* agree between the vertex and fragment stages. They're treated as
* vertex program output attribs and as fragment program input attribs.
* 3. The vertex and fragment programs are cloned and modified to update
* src/dst register references so they use the new, linked varying
* storage locations.
*/
void
_slang_link(GLcontext *ctx,
GLhandleARB programObj,
struct gl_shader_program *shProg)
{
const struct gl_vertex_program *vertProg = NULL;
const struct gl_fragment_program *fragProg = NULL;
GLboolean vertNotify = GL_TRUE, fragNotify = GL_TRUE;
GLuint numSamplers = 0;
GLuint i;
_mesa_clear_shader_program_data(ctx, shProg);
/* Initialize LinkStatus to "success". Will be cleared if error. */
shProg->LinkStatus = GL_TRUE;
/* check that all programs compiled successfully */
for (i = 0; i < shProg->NumShaders; i++) {
if (!shProg->Shaders[i]->CompileStatus) {
link_error(shProg, "linking with uncompiled shader\n");
return;
}
}
shProg->Uniforms = _mesa_new_uniform_list();
shProg->Varying = _mesa_new_parameter_list();
/*
* Find the vertex and fragment shaders which define main()
*/
{
struct gl_shader *vertShader, *fragShader;
vertShader = get_main_shader(ctx, shProg, GL_VERTEX_SHADER);
fragShader = get_main_shader(ctx, shProg, GL_FRAGMENT_SHADER);
if (vertShader)
vertProg = vertex_program(vertShader->Program);
if (fragShader)
fragProg = fragment_program(fragShader->Program);
if (!shProg->LinkStatus)
return;
}
#if FEATURE_es2_glsl
/* must have both a vertex and fragment program for ES2 */
if (!vertProg) {
link_error(shProg, "missing vertex shader\n");
return;
}
if (!fragProg) {
link_error(shProg, "missing fragment shader\n");
return;
}
#endif
/*
* Make copies of the vertex/fragment programs now since we'll be
* changing src/dst registers after merging the uniforms and varying vars.
*/
_mesa_reference_vertprog(ctx, &shProg->VertexProgram, NULL);
if (vertProg) {
struct gl_vertex_program *linked_vprog =
_mesa_clone_vertex_program(ctx, vertProg);
shProg->VertexProgram = linked_vprog; /* refcount OK */
/* vertex program ID not significant; just set Id for debugging purposes */
shProg->VertexProgram->Base.Id = shProg->Name;
ASSERT(shProg->VertexProgram->Base.RefCount == 1);
}
_mesa_reference_fragprog(ctx, &shProg->FragmentProgram, NULL);
if (fragProg) {
struct gl_fragment_program *linked_fprog =
_mesa_clone_fragment_program(ctx, fragProg);
shProg->FragmentProgram = linked_fprog; /* refcount OK */
/* vertex program ID not significant; just set Id for debugging purposes */
shProg->FragmentProgram->Base.Id = shProg->Name;
ASSERT(shProg->FragmentProgram->Base.RefCount == 1);
}
/* link varying vars */
if (shProg->VertexProgram) {
if (!link_varying_vars(ctx, shProg, &shProg->VertexProgram->Base))
return;
}
if (shProg->FragmentProgram) {
if (!link_varying_vars(ctx, shProg, &shProg->FragmentProgram->Base))
return;
}
/* link uniform vars */
if (shProg->VertexProgram) {
if (!link_uniform_vars(ctx, shProg, &shProg->VertexProgram->Base,
&numSamplers)) {
return;
}
}
if (shProg->FragmentProgram) {
if (!link_uniform_vars(ctx, shProg, &shProg->FragmentProgram->Base,
&numSamplers)) {
return;
}
}
/*_mesa_print_uniforms(shProg->Uniforms);*/
if (shProg->VertexProgram) {
if (!_slang_resolve_attributes(shProg, &vertProg->Base,
&shProg->VertexProgram->Base)) {
return;
}
}
if (shProg->VertexProgram) {
_slang_update_inputs_outputs(&shProg->VertexProgram->Base);
_slang_count_temporaries(&shProg->VertexProgram->Base);
if (!(shProg->VertexProgram->Base.OutputsWritten
& BITFIELD64_BIT(VERT_RESULT_HPOS))) {
/* the vertex program did not compute a vertex position */
link_error(shProg,
"gl_Position was not written by vertex shader\n");
return;
}
}
if (shProg->FragmentProgram) {
_slang_count_temporaries(&shProg->FragmentProgram->Base);
_slang_update_inputs_outputs(&shProg->FragmentProgram->Base);
}
/* Check that all the varying vars needed by the fragment shader are
* actually produced by the vertex shader.
*/
if (shProg->FragmentProgram) {
const GLbitfield varyingRead
= shProg->FragmentProgram->Base.InputsRead >> FRAG_ATTRIB_VAR0;
const GLbitfield64 varyingWritten = shProg->VertexProgram ?
shProg->VertexProgram->Base.OutputsWritten >> VERT_RESULT_VAR0 : 0x0;
if ((varyingRead & varyingWritten) != varyingRead) {
link_error(shProg,
"Fragment program using varying vars not written by vertex shader\n");
return;
}
}
/* check that gl_FragColor and gl_FragData are not both written to */
if (shProg->FragmentProgram) {
const GLbitfield64 outputsWritten =
shProg->FragmentProgram->Base.OutputsWritten;
if ((outputsWritten & BITFIELD64_BIT(FRAG_RESULT_COLOR)) &&
(outputsWritten >= BITFIELD64_BIT(FRAG_RESULT_DATA0))) {
link_error(shProg, "Fragment program cannot write both gl_FragColor"
" and gl_FragData[].\n");
return;
}
}
if (fragProg && shProg->FragmentProgram) {
/* Compute initial program's TexturesUsed info */
_mesa_update_shader_textures_used(&shProg->FragmentProgram->Base);
/* notify driver that a new fragment program has been compiled/linked */
vertNotify = ctx->Driver.ProgramStringNotify(ctx, GL_FRAGMENT_PROGRAM_ARB,
&shProg->FragmentProgram->Base);
if (ctx->Shader.Flags & GLSL_DUMP) {
printf("Mesa pre-link fragment program:\n");
_mesa_print_program(&fragProg->Base);
_mesa_print_program_parameters(ctx, &fragProg->Base);
printf("Mesa post-link fragment program:\n");
_mesa_print_program(&shProg->FragmentProgram->Base);
_mesa_print_program_parameters(ctx, &shProg->FragmentProgram->Base);
}
}
if (vertProg && shProg->VertexProgram) {
/* Compute initial program's TexturesUsed info */
_mesa_update_shader_textures_used(&shProg->VertexProgram->Base);
/* notify driver that a new vertex program has been compiled/linked */
fragNotify = ctx->Driver.ProgramStringNotify(ctx, GL_VERTEX_PROGRAM_ARB,
&shProg->VertexProgram->Base);
if (ctx->Shader.Flags & GLSL_DUMP) {
printf("Mesa pre-link vertex program:\n");
_mesa_print_program(&vertProg->Base);
_mesa_print_program_parameters(ctx, &vertProg->Base);
printf("Mesa post-link vertex program:\n");
_mesa_print_program(&shProg->VertexProgram->Base);
_mesa_print_program_parameters(ctx, &shProg->VertexProgram->Base);
}
}
/* Debug: */
if (0) {
if (shProg->VertexProgram)
_mesa_postprocess_program(ctx, &shProg->VertexProgram->Base);
if (shProg->FragmentProgram)
_mesa_postprocess_program(ctx, &shProg->FragmentProgram->Base);
}
if (ctx->Shader.Flags & GLSL_DUMP) {
printf("Varying vars:\n");
_mesa_print_parameter_list(shProg->Varying);
if (shProg->InfoLog) {
printf("Info Log: %s\n", shProg->InfoLog);
}
}
if (!vertNotify || !fragNotify) {
/* driver rejected one/both of the vertex/fragment programs */
if (!shProg->InfoLog) {
link_error(shProg,
"Vertex and/or fragment program rejected by driver\n");
}
}
else {
shProg->LinkStatus = (shProg->VertexProgram || shProg->FragmentProgram);
}
}
awl::main::exit_code const
example_main(
awl::main::function_context const &
)
try
{
sge::systems::instance<
brigand::list<
sge::systems::with_window,
sge::systems::with_renderer<
sge::systems::renderer_caps::ffp
>,
sge::systems::with_input,
sge::systems::with_image2d
>
> const sys(
sge::systems::make_list
(
sge::systems::window(
sge::systems::window_source(
sge::systems::original_window(
sge::window::title(
FCPPT_TEXT("sge cg point sprites test")
)
)
)
)
)
(
sge::systems::renderer(
sge::renderer::pixel_format::object(
sge::renderer::pixel_format::color::depth32,
sge::renderer::pixel_format::depth_stencil::off,
sge::renderer::pixel_format::optional_multi_samples(),
sge::renderer::pixel_format::srgb::no
),
sge::renderer::display_mode::parameters(
sge::renderer::display_mode::vsync::on,
sge::renderer::display_mode::optional_object()
),
sge::viewport::optional_resize_callback{
sge::viewport::fill_on_resize()
}
)
)
(
sge::systems::image2d(
sge::media::optional_extension_set(
sge::media::extension_set{
sge::media::extension(
FCPPT_TEXT("png")
)
}
)
)
)
(
sge::systems::input(
sge::systems::cursor_option_field::null()
)
)
);
typedef
sge::renderer::vf::pos<
float,
3
>
pos3_type;
typedef
sge::renderer::vf::texpos<
float,
2,
sge::renderer::vf::index<
0u
>
>
texpos_type;
typedef
sge::renderer::vf::extra<
sge::renderer::vf::vector<
float,
1u
>,
sge::renderer::vf::index<
0u
>
>
point_size_type;
typedef
sge::renderer::vf::part<
brigand::list<
pos3_type,
texpos_type,
point_size_type
>
>
format_part;
typedef
sge::renderer::vf::format<
brigand::list<
format_part
>
>
format;
sge::renderer::vertex::declaration_unique_ptr const vertex_declaration(
sys.renderer_device_core().create_vertex_declaration(
sge::renderer::vertex::declaration_parameters(
sge::renderer::vf::dynamic::make_format<
format
>()
)
)
);
sge::cg::context::object const cg_context;
sge::cg::profile::object const vertex_profile(
sys.renderer_device_core().create_cg_profile(
sge::cg::profile::shader_type::vertex
)
);
sge::cg::string const vertex_shader_source(
"struct vertex_outputs\n"
"{\n"
" float2 position : POSITION;\n"
" float point_size : PSIZE;\n"
" float2 external_texpos : COLOR0;\n"
"};\n"
"vertex_outputs\n"
"vertex_main(\n"
" float2 position : POSITION,\n"
" float2 texpos : TEXCOORD0,\n"
" float point_size : $0$\n"
")\n"
"{\n"
" vertex_outputs outs;\n"
" outs.position = float4(position,0.0,1.0);\n"
" outs.point_size = point_size;\n"
" outs.external_texpos = texpos;\n"
" return outs;\n"
"}\n"
);
sge::cg::string const pixel_shader_source(
"float4\n"
"pixel_main(\n"
" float2 external_texpos : COLOR0,\n"
" float2 texCoord : TEXCOORD0,\n"
" uniform sampler2D decal : TEX0\n"
") : COLOR\n"
"{\n"
" return tex2D(decal,external_texpos.xy + texCoord.xy / 2.0);\n"
"}\n"
);
sge::cg::program::object vertex_program(
sge::cg::program::from_string_parameters(
cg_context,
sge::cg::program::source_type::text,
vertex_profile,
sys.renderer_device_core().transform_cg_vertex_program(
*vertex_declaration,
sge::cg::program::source(
vertex_shader_source
)
),
sge::cg::program::main_function(
"vertex_main"
),
sys.renderer_device_core().cg_compile_options(
cg_context,
vertex_profile
)
)
);
sge::renderer::cg::loaded_program_unique_ptr const loaded_vertex_program(
sys.renderer_device_core().load_cg_program(
vertex_program
)
);
sge::cg::profile::object const pixel_profile(
sys.renderer_device_core().create_cg_profile(
sge::cg::profile::shader_type::pixel
)
);
sge::cg::program::object pixel_program(
sge::cg::program::from_string_parameters(
cg_context,
sge::cg::program::source_type::text,
pixel_profile,
sge::cg::program::source(
pixel_shader_source
),
sge::cg::program::main_function(
"pixel_main"
),
sys.renderer_device_core().cg_compile_options(
cg_context,
pixel_profile
)
)
);
sge::renderer::cg::loaded_program_unique_ptr const loaded_pixel_program(
sys.renderer_device_core().load_cg_program(
pixel_program
)
);
sge::renderer::vertex::buffer_unique_ptr const vertex_buffer(
sys.renderer_device_core().create_vertex_buffer(
sge::renderer::vertex::buffer_parameters(
*vertex_declaration,
sge::renderer::vf::dynamic::make_part_index<
format,
format_part
>(),
sge::renderer::vertex::count(
1u
),
sge::renderer::resource_flags_field::null()
)
)
);
{
sge::renderer::vertex::scoped_lock const vblock(
*vertex_buffer,
sge::renderer::lock_mode::writeonly
);
typedef
sge::renderer::vf::view<
format_part
>
vertex_view;
vertex_view const vertices(
vblock.value()
);
vertex_view::iterator vb_it(
vertices.begin()
);
typedef
pos3_type::packed_type
pos3;
typedef
texpos_type::packed_type texpos;
typedef
point_size_type::packed_type
point_size;
(*vb_it).set<
pos3_type
>(
pos3(
0.f,
0.f,
0.f
)
);
(*vb_it).set<
texpos_type
>(
texpos(
0.5f,
0.5f
)
);
(*vb_it).set<
point_size_type
>(
point_size(
200.0f
)
);
}
sge::renderer::texture::planar_unique_ptr const texture(
sge::renderer::texture::create_planar_from_path(
sge::config::media_path()
/ FCPPT_TEXT("images")
/ FCPPT_TEXT("uvtestgrid.png"),
sys.renderer_device_core(),
sys.image_system(),
sge::renderer::texture::mipmap::off(),
sge::renderer::resource_flags_field::null(),
sge::renderer::texture::emulate_srgb_from_caps(
sys.renderer_device_ffp().caps()
)
)
);
sge::renderer::cg::loaded_texture_unique_ptr const loaded_texture(
sys.renderer_device_core().load_cg_texture(
pixel_program.parameter(
"decal"
).object(),
*texture
)
);
sge::renderer::state::ffp::misc::object_unique_ptr const misc_state(
sys.renderer_device_ffp().create_misc_state(
sge::renderer::state::ffp::misc::parameters(
sge::renderer::state::ffp::misc::enable_point_sprites(
true
),
sge::renderer::state::ffp::misc::local_viewer(
false
),
sge::renderer::state::ffp::misc::normalize_normals(
false
)
)
)
);
auto const draw(
[
&loaded_pixel_program,
&loaded_texture,
&loaded_vertex_program,
&misc_state,
&sys,
&vertex_buffer,
&vertex_declaration
]{
sge::renderer::context::scoped_ffp const scoped_block(
sys.renderer_device_ffp(),
sys.renderer_device_ffp().onscreen_target()
);
scoped_block.get().clear(
sge::renderer::clear::parameters()
.back_buffer(
sge::image::color::any::object{
sge::image::color::predef::blue()
}
)
);
sge::renderer::state::ffp::misc::scoped const scoped_misc(
scoped_block.get(),
*misc_state
);
sge::renderer::vertex::scoped_declaration_and_buffers const vb_context(
scoped_block.get(),
*vertex_declaration,
sge::renderer::vertex::const_buffer_ref_container{
fcppt::make_cref(
*vertex_buffer
)
}
);
sge::renderer::cg::scoped_program const scoped_vertex_program(
scoped_block.get(),
*loaded_vertex_program
);
sge::renderer::cg::scoped_program const scoped_pixel_program(
scoped_block.get(),
*loaded_pixel_program
);
sge::renderer::cg::scoped_texture const scoped_texture(
scoped_block.get(),
*loaded_texture
);
scoped_block.get().render_nonindexed(
sge::renderer::vertex::first(
0u
),
sge::renderer::vertex::count{
vertex_buffer->linear_size()
},
sge::renderer::primitive_type::point_list
);
}
);
return
sge::window::loop(
sys.window_system(),
sge::window::loop_function{
[
&sys,
&draw
](
awl::event::base const &_event
)
{
sge::systems::quit_on_escape(
sys,
_event
);
fcppt::optional::maybe_void(
fcppt::cast::dynamic<
sge::renderer::event::render const
>(
_event
),
[
&draw
](
fcppt::reference<
sge::renderer::event::render const
>
)
{
draw();
}
);
}
}
);
}
catch(
fcppt::exception const &_error
)
{
awl::show_error(
_error.string()
);
return
awl::main::exit_failure();
}
catch(
std::exception const &_error
)
{
awl::show_error_narrow(
_error.what()
);
return
awl::main::exit_failure();
}
